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The observed result of the independent variable being manipulated. DEPENDENT VARIABLE. The variable representing the value being manipulated or changed. INDEPENDENT VARIABLE. A large volume of air that has nearly the same temperature and humidity at different locations at the same altitude.
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The observed result of the independent variable being manipulated DEPENDENT VARIABLE
The variable representing the value being manipulated or changed INDEPENDENT VARIABLE
A large volume of air that has nearly the same temperature and humidity at different locations at the same altitude. AIR MASS
The force of air molecules pushing on an area AIR PRESSURE
A heavy odorless colorless gas formed during respiration CARBON DIOXIDE
Gases such as carbon dioxide and methane, which absorb and give off infrared radiation as part of the Greenhouse Effect GREENHOUSE GASES
The amount of water vapor in the air HUMIDITY
A tropical low-pressure system with winds of 74 mph + HURRICANE
Coldest layer; meteors burn up here MESOSPHERE
A colorless, odorless, tasteless gas; 78% of atmosphere NITROGEN
A colorless, odorless, tasteless nonflammable gas; 21% of atmosphere OXYGEN
Energy that travels across distances as certain types of waves RADIATION
Clear, dry layer; contains Ozone layer STRATOSPHERE
The transfer of heat energy from one substance to another through direct contact CONDUCTION
Hottest layer of the atmosphere where the air is very thin, but can feel cold THERMOSPHERE
The transfer of energy from place to place by the motion of heated gas or liquid CONVECTION
A violently rotating column of air stretching from a cloud to the ground TORNADOES
We live here; weather occurs here; contains 80% of the atmosphere’s mass TROPOSPHERE
The influence of Earth’s rotation on objects that move over Earth CORIOLIS EFFECT
Water in its gaseous state; totally invisible WATER VAPOR
The process by which certain gases in a planet’s atmosphere absorb and emit infrared radiation, resulting in an increase in surface temperature GREENHOUSE EFFECT
The rate at which velocity changes over time ACCELERATION
A machine that is made up of two or more simple machines COMPOUND MACHINES
A push or pull; something that changes the motion of an object FORCE
A force that resists the motion between two surfaces in contact FRICTION
The force that objects exert on each other because of their masses GRAVITY
The resistance of an object to a change in the speed or the direction of its motion INERTIA
The energy of motion KINETIC ENERGY
A body, as a piece of iron or steel that possesses the property of attracting certain substances, as iron MAGNET
The number of times a machine multiplies the input force; output force divided by input force MECHANICAL ADVANTAGE
A combination of the kinetic energy and potential energy an object has MECHANICAL ENERGY
A scientific law stating that objects at rest remain at rest, and objects in motion remain in motion with the same velocity, unless acted on by an unbalanced forced NEWTON’S FIRST LAW
A scientific law stating that the acceleration of an object increases with increased force and decreases with increased mass NEWTON’S SECOND LAW
A scientific law stating that every time one object exerts a force on another object, the second object exerts a force that is equal in size and opposite in direction back on the first object NEWTON’S THIRD LAW
Stored energy; the energy an object has due to its position, molecular arrangement, or chemical composition POTENTIAL ENERGY
A location to which another location is compared REFERENCE POINT
One of the basic machines on which all other mechanical machines are based SIMPLE MACHINES
A measure of how fast something moves through a particular distance over a definite time period; distance divided by time SPEED
Speed in a specific direction VELOCITY
A condition needed for health and functioning in which an organism or cell maintains a relatively stable internal environment HOMEOSTASIS
The smallest unit that is able to perform the basic functions of life CELL
Outer boundary of the cytoplasm and the environment outside; semi-permeable CELL MEMBRANE
Protective outer covering, outside of the cell membrane; plant cells only CELL WALL
Fluid that fills cell (gelatin-like) in which many organelles are found; carries out the work of the cell CYTOPLASM
Contains genetic material a cell needs to reproduce and function; controls eating, movement, etc… - directs all activities NUCLEUS